4.1 Flashcards
1
Q
atom
A
the smallest unit of an element that maintains the properties of that element
2
Q
electron
A
a subatomic particle that has a negative charge
3
Q
nucleous
A
in physical science an atom’s central region which is made up of protons and neutrons.
4
Q
electron cloud
A
a region around the nucleolus of an atom where electrons are likely to be found.
5
Q
proton
A
positively charged particles in the necleus
6
Q
atomic mass unit
A
a unit of mass that describes the mass of an atm or molecule
7
Q
neutron
A
the particles of the nucleus that have no electrical charge
